Qt5 C++：QCheckBox does not display checkbox

[bigbang95]

Describe Your Environment

[Versions from your environment]

• QDarkStyle: v.3.2.3
• OS: Win10 19045
• Qt: 5.15.2
• VS2019 msvc

Language

C++

What is the problem？

As shown in the following figure, for the light and dark theme, the QCheckBox control does not display the checkbox on the left square

normal：

problem:

QDarkStyle installation steps

1. code:

    QFile f("qdarkstyle/light/lightstyle.qss");

    if (!f.exists()) {
        QMessageBox::warning(this, "", "Unable to set stylesheet, file not found\n");
    }
    else {
        f.open(QFile::ReadOnly | QFile::Text);
        QTextStream ts(&f);
        qApp->setStyleSheet(ts.readAll());
    }

2. Copy qdarkstyle to the program root directory